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US5417624A - Actuating means for a motor vehicle locking brake - Google Patents

Actuating means for a motor vehicle locking brake Download PDF

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Publication number
US5417624A
US5417624A US07/781,210 US78121092A US5417624A US 5417624 A US5417624 A US 5417624A US 78121092 A US78121092 A US 78121092A US 5417624 A US5417624 A US 5417624A
Authority
US
United States
Prior art keywords
lever
locking brake
brake
locking
spur
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/781,210
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English (en)
Inventor
Alfons Weissbrich
Simone Ruhr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Assigned to VOLKSWAGEN AG reassignment VOLKSWAGEN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RUHR, SIMONE, WEISSBRICH, ALFONS
Application granted granted Critical
Publication of US5417624A publication Critical patent/US5417624A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/107—Disposition of hand control with electrical power assistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S477/00—Interrelated power delivery controls, including engine control
    • Y10S477/901—Control signal is slope

Definitions

  • the invention relates to an actuating means for a motor vehicle locking brake.
  • a locking brake of this kind is disclosed in principle by German Letters of Disclosure 2,035,349.
  • This known locking brake is intended to be capable of automatic engagement and disengagement in any operating mode of the vehicle, such as for example starting, setting in motion, changing gears, clutch action, standing and parking.
  • no concrete design or control features are disclosed in that source. It is merely set forth schematically and implicitly that in the train of electrical supply to an electric motor, several electric switches are to be arranged, associated with the ignition, clutch and transmission of the motor vehicle, their conditions depending on the current functional mode ignition on/ignition off, clutch in/clutch out, and in-gear/neutral, while an additional electric switch, apparently manually actuable, can render the aforementioned electric switches inoperative and control the electric motor directly.
  • the object of the invention is to create an actuating means that meets the requirements of practice as to mode of operation and dependability in service, and furthermore affords numerous additional possibilities for control and functional monitoring of the locking brake.
  • a brake actuator having a threaded spindle driven by a reversible electric motor and a brake-actuating lever connected to the brake and having a spur gear engaging the spindle thread, the mechanical linkage between the motor and the lever including a self-locking connection.
  • FIG. 1 shows a view of an actuating means according to the invention
  • FIG. 2 shows a detail of said actuating means
  • FIG. 3 is an enlarged fragmentary side view illustrating the brake actuator portion of FIG. 2.
  • the actuating means represented by way of example is an apparatus that may be operated purely mechanically in the manner of known hand brake mechanisms, or purely electrically, with no need to execute any switching maneuvers or the like.
  • the apparatus comprises an electric motor 1 driving a threaded spindle 4 whose coarse thread 5 is preferably of serrated configuration.
  • the thread 5 is engaged by the spur 6 of a lever 7 urged towards the spindle 4 by spring arrangements 13, as clearly indicated in FIG. 2.
  • the lever 7 in turn is articulated to the motor end of the transmission element 2, in communication with the locking members of the locking brake, not explicitly shown, of the motor vehicle.
  • the transmission element preferably used, as in the embodiment shown by way of example, is a cable in the nature of a Bowden release, whose cable 21 is connected to the lever 7, while its sleeve 22 abuts in conventionally fixed location on the vehicle framework, not shown in detail.
  • the electric motor 1 used is preferably a known direct-current motor supplied from a battery carried on the vehicle and capable of being switched on and off or in direction of rotation according to prevailing requirements by means of an electric switch 1a and/or an electronic regulating and control means 1b, not shown in detail.
  • an electric reversing switch is used for this purpose.
  • the electric motor 1 For electrically setting and electrically releasing the locking brake, the electric motor 1 is switched in in each instance by actuating the reversing switch 1a, the direction of rotation of the electric motor and hence the direction of rotation of the threaded spindle 4 depending on the direction of actuation of the switch 1a. According to the direction of rotation of the spindle 4, therefore, the lever 7, with its spur 6 engaging the thread of the spindle and the cable 21 of the transmission element 2 acting thereon, is moved in either the one direction or the other axially.
  • the reversing switch is operated so that the lever 7 is moved out of its fully extended rest position "a" as shown in the direction of the arrow x, for example into position "b," whereby a tension tightening the locking members is transmitted to the locking members of the brake by the cable 21 of the transmission element 2.
  • the electric motor 1 is shut off, either by releasing the aforesaid reversing switch 1a or else automatically by means of an electronic regulator and control 1b, not shown in detail.
  • the locking force of the brake is fully maintained even though the electric motor is switched off, if the gear 3 and/or the thread 5, or the pair comprising thread 5/spur 6, is of self-locking design; so no retaining forces need be applied by the electric motor 1.
  • the electric motor is switched on again by suitable switch actuation, but in the opposed direction of rotation, so that the lever 7 is moved back again, into the position marked "a" in FIG. 1 at the farthest.
  • the transmission element 2, or cable 21, after elimination of the tension exerted by the lever 7, is likewise retracted in turn to its original position by the conventional restoring springs or the like of the brake.
  • a manually actuated electric reversing switch 1a is provided, as aforementioned.
  • an additional electronic regulating and control means 1b may be provided, both to monitor proper function of the apparatus and to control the locking brake in dependency upon operating parameters of the motor vehicle and/or of the electric motor 1.
  • the electric motor 1 may be switched off automatically, for example by such electronic regulating and control means 1b, when its motor current exceeds a predetermined value, or else when it has no longer been rotated for a certain length of time.
  • suitable known sensors 1c and 1d must be provided, to gauge firstly the motor current and secondly the rotational speed of the motor shaft, the initial values whereof are supplied to the electronic regulating and control means 1b.
  • the said motor current limit As a function of the up or down grade of the roadway, namely in such manner that the limit is correspondingly increased with the magnitude of the grade or inclination of the roadway.
  • the electric motor 1 will then be switched off only at a higher motor current, or in other words not until a correspondingly higher locking force is made to act on the locking brake.
  • the vehicle load or the towing of a motor vehicle trailer may be taken into account in simple manner by varying the motor current limit.
  • the electric motor 1 may simply be switched off in response to axial force upon reaching the position "b" (locking brake set) or that of the stop in position "a” (brake released) as represented in FIG. 1.
  • the ability of the system to function properly may also be monitored continuously in very simple manner.
  • the electronic regulating and control means 1b is notified, for example by signals from current and speed sensors 1c and 1d, that firstly the motor current is too high and secondly too few motor revolutions, or too few spindle revolutions, are being executed, then the electronic regulating and control means 1b, with the aid of the logic components it contains, for example microprocessors or the like, will conclude from these data that the locking brake is apparently jammed, for example rusted or frozen.
  • the electronic regulating and control means 1b when firstly the motor current ceases to rise and secondly too many motor or spindle revolutions are detected, will diagnose in simple manner that the transmission element 2 has failed, or else, for example due to cable stretch, become too long.
  • the electrically operated locking brake actuation means according to the invention may also advantageously be coupled to a conventional theft alarm system, for example in such a manner that the locking brake will be automatically set when an alarm has been triggered.
  • this function of automatic actuation of the locking brake is not to be operative in general, but only at the will of the driver, then it is possible in simple manner to activate this function by way of an AUTO switch integrated with the electric reversing switch provided for actuation of the electric motor 1. This function may then be indicated to the operator by a light-emitting diode or the like.
  • the electronic regulating and control means it is of course possible also in simple manner to automatically release the electrically set locking brake, for example, in the case of motor vehicles with automatic transmission, when the engine is running, the automatic transmission 1f is in gear, and the accelerator 1a is actuated.
  • the automatic release of the electrically set locking brake may for example take place when the engine is running, the transmission 1f is in gear, the gas pedal is actuated, and the clutch is engaged to a certain extent by corresponding actuation of the clutch pedal.
  • the electric motor driven actuating means for a motor vehicle locking brake as above described may by very simple design means be modified so that if necessary, or at will, it may be actuated manually by means of a conventional pivoted hand brake lever, as is the case in the embodiment shown by way of example in FIG. 1.
  • the hand brake lever 9 is pivotably articulated to the frame of the vehicle about an axis 8 at a distance from and transverse to the lengthwise extent of the lever 7 and transmission element 2, and as a rule transverse to the longitudinal axis of the vehicle as well.
  • a substantially shorter actuating lever 10, compared to the hand brake lever 9 may also be pivoted, its free end being articulated to the motor end of the transmission element 2, i.e. of the cable 21, in common with the lever 7.
  • the hand brake lever 9 and actuating lever 10 are not rigidly connected, i.e. they are in principle pivotable relative to each other.
  • a follower mechanism is arranged, namely a follower 11, which loosely embraces the actuating lever 10 from behind in its rest position (solid lines in FIG. 1) when the hand brake lever 9 is in its stand-by or rest position "a.”
  • the serrated configuration of the thread advantageously facilitates the "skipping" of the threads by the spur 6 in the direction of the arrow x in the first place, and brings it about that the spring means 13 need exert only slight radial engaging forces to ensure that the retaining forces of the transmission element 2, acting contrary to the direction of the arrow x when the locking brake is set, will be dependably taken up by the thread 5 of the spindle 4.
  • the positions assumed by the hand brake lever, the actuating lever and the spur lever are indicated in dot-dashed lines and marked 9', 10' and 7' respectively.
  • the spur lever 7', the actuating lever 10' and the cable 21' retain the positions they occupy by reason of the dynamic and geometric interlock between spur 6 and thread 5 and by reason of the self-locking design of the gear 3 and the thread etc.
  • the hand brake lever itself may at the same time if desired--being coupled to the actuating lever 10 only by its follower 11--be "put away” again in its rest position "a.” It is easily seen that the hand brake lever 9 will therefore remain in its rest position "a” as shown in the case of purely electrical actuation of the locking brake. Thus in purely electrical actuation of the locking brake, the hand brake lever will not by any means swing automatically, thus possibly annoying the driver.
  • a mechanism is provided in the hand brake lever 9, in the embodiment shown by way of example a cable mechanism 12 actuable by means of a pushbutton 13, whereby the spur 6 of lever 7 can be disengaged from the thread 5 of the spindle 4 against the force of the spring means 13 and against the action of the frictional or locking forces there prevailing, thus releasing the geometric and dynamic interlock between spindle 4 and lever 7, and allowing the transmission element 2 and the actuating lever 10 and spur lever 7 to return into their basic position under the influence of the cable forces acting against the direction of the arrow x.
  • the mechanical release of the locking brake may take place equally with hand brake lever 9 or 9' in rest position "a” or in locking position "b." With hand brake lever 9 and follower 11 in rest position, release of the locking brake is very rapid, abrupt as it were, since after disengagement of the spur 6 from the thread 5, the actuating lever can return from its position marked 10' to its rest position marked 10 quite unhindered.
  • the locking brake may alternatively be released in customary manner more slowly and well under control; for in that case, the follower 11 of the hand brake lever is in contact with the disengaged actuating lever 10'.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)
US07/781,210 1989-06-20 1990-06-13 Actuating means for a motor vehicle locking brake Expired - Fee Related US5417624A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE3919994 1989-06-20
DE3942539 1989-12-22
DE3919994.0 1989-12-22
DE3942539.8 1989-12-22
PCT/EP1990/000930 WO1990015734A1 (de) 1989-06-20 1990-06-13 Betätigungseinrichtung für eine kraftfahrzeug-feststellbremse

Publications (1)

Publication Number Publication Date
US5417624A true US5417624A (en) 1995-05-23

Family

ID=25882102

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/781,210 Expired - Fee Related US5417624A (en) 1989-06-20 1990-06-13 Actuating means for a motor vehicle locking brake

Country Status (6)

Country Link
US (1) US5417624A (de)
EP (1) EP0478642B1 (de)
JP (1) JP2931402B2 (de)
DE (1) DE59003809D1 (de)
ES (1) ES2047936T3 (de)
WO (1) WO1990015734A1 (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997044221A1 (de) * 1996-05-21 1997-11-27 Bayerische Motoren Werke Aktiengesellschaft Feststellbremsanlage
US6079794A (en) * 1995-06-29 2000-06-27 Itt Manufacturing Enterprises, Inc. Brake-actuating device
US6139117A (en) * 1998-03-26 2000-10-31 Toyota Jidosha Kabushiki Kaisha Electrically operated parking brake apparatus having braking force changing device operable while drive power source switch is off
US6213259B1 (en) * 1998-02-25 2001-04-10 Dura Automotive Systems, Inc. Device, method and system for control of an electrically powered parking brake
WO2001085509A1 (en) * 2000-05-11 2001-11-15 Nicola Betti Emergency brake automatic controlled device for motor vehicles or the like
US20020036996A1 (en) * 1995-06-30 2002-03-28 Ozluturk Fatih M. Initial power control for spread-spectrum communications
US6386338B1 (en) 2000-12-01 2002-05-14 Dura Global Technologies, Inc. Electric parking brake manual override
US6701242B1 (en) * 1999-06-10 2004-03-02 Continental Teves Ag & Co., Ohg Device and method for actuating a brake system of a motor vehicle according to driving situation
US20040043868A1 (en) * 2000-12-08 2004-03-04 Heinz Ewinger Method for operating a motor-driven vehicle
US20040094913A1 (en) * 2002-11-20 2004-05-20 Flynn Charles L. Inclination-measuring device
WO2005063535A1 (de) * 2003-12-23 2005-07-14 Lucas Automotive Gmbh Feststellbremse und verfahren zur steuerung derselben
US20050173977A1 (en) * 2002-05-16 2005-08-11 Joerg Fischer Vehicle brake system comprising a service brake system and a parking brake system
US20050246081A1 (en) * 2004-04-10 2005-11-03 Christophe Bonnet Method and system to prevent unintended rolling of a vehicle
US20060224277A1 (en) * 2003-02-15 2006-10-05 Daimlerchrysler Ag Method and device for identifying the initiation of the starting process carried out by a driver of a vehicle
WO2007120267A2 (en) * 2005-11-30 2007-10-25 Goodrich Corporation Controller for electromechanical braking system with power demand limitation and method
US20080147286A1 (en) * 2004-08-17 2008-06-19 Siemens Aktiengesellschaft Control System for the Parking Brake of a Brake System in a Motor Vehicle
US7992691B2 (en) 2007-10-24 2011-08-09 Continental Teves Ag & Co. Ohg Parking brake and method for operating same
US20120138394A1 (en) * 2010-12-02 2012-06-07 Kia Motors Corporation Control method for parking release apparatus of shift-by-wire shifting device
US20130073163A1 (en) * 2010-08-13 2013-03-21 Wuhu Bethel Automative Safety Systems Co., Ltd. Electronic parking brake system, assistant starting method thereof for motor vehicle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027810A1 (de) * 1990-09-01 1992-03-05 Bosch Gmbh Robert Servounterstuetzte feststellbremse
DE4129919C2 (de) * 1991-09-09 2002-05-29 Bayerische Motoren Werke Ag Feststellbremsanlage für Kraftwagen, insbesondere Personenkraftwagen
DE4129934C2 (de) * 1991-09-09 1994-12-22 Bayerische Motoren Werke Ag Feststellbremsanlage für Personenkraftwagen
DE4205588C2 (de) * 1992-02-24 1995-10-26 Bayerische Motoren Werke Ag Feststellbremsanlage
DE4345262A1 (de) * 1993-09-01 1995-08-24 Johann Binder Bremssystem
DE19632863B4 (de) * 1996-08-14 2007-10-18 Bayerische Motoren Werke Ag Kraftfahrzeug mit einer Feststellbremsanlage
FR2821653B1 (fr) * 2001-03-01 2003-09-05 Renault Procede et dispositif de commande de freinage
DE102011004763A1 (de) * 2011-02-25 2012-08-30 Robert Bosch Gmbh Verfahren zum Betätigen einer Feststellbremse in einem Fahrzeug
DE102011110913A1 (de) 2011-08-18 2013-02-21 Audi Ag Verfahren zum Verzögern eines Fahrzeugs

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US4795002A (en) * 1988-01-21 1989-01-03 Itt Corporation Electrically operated actuator for rear parking brake cables including driver and driven members rotatably mounted about same pivot pin
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US4865165A (en) * 1988-10-04 1989-09-12 Allied-Signal Inc. Electrically actuated cable
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US5180038A (en) * 1992-01-24 1993-01-19 Orscheln Co. Electronically controlled parking brake system

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US2867310A (en) * 1956-12-24 1959-01-06 Mabel M Martin Vacuum actuator for foot operated emergency brake
DE2035349A1 (de) * 1970-07-13 1972-01-20 Franzmann R Standbremse fur Kraftfahrzeuge
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US5180038A (en) * 1992-01-24 1993-01-19 Orscheln Co. Electronically controlled parking brake system

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6079794A (en) * 1995-06-29 2000-06-27 Itt Manufacturing Enterprises, Inc. Brake-actuating device
US20020036996A1 (en) * 1995-06-30 2002-03-28 Ozluturk Fatih M. Initial power control for spread-spectrum communications
US6279692B1 (en) 1996-05-21 2001-08-28 Bayerische Motoren Werke Aktiengesellschaft Parking brake system
WO1997044221A1 (de) * 1996-05-21 1997-11-27 Bayerische Motoren Werke Aktiengesellschaft Feststellbremsanlage
US6213259B1 (en) * 1998-02-25 2001-04-10 Dura Automotive Systems, Inc. Device, method and system for control of an electrically powered parking brake
EP1056961B1 (de) * 1998-02-25 2003-04-16 Dura Automotive Systems, Inc. Verfahren, methode und system zur steuerung einer elektrisch betriebenen parkbremse
US6139117A (en) * 1998-03-26 2000-10-31 Toyota Jidosha Kabushiki Kaisha Electrically operated parking brake apparatus having braking force changing device operable while drive power source switch is off
US6701242B1 (en) * 1999-06-10 2004-03-02 Continental Teves Ag & Co., Ohg Device and method for actuating a brake system of a motor vehicle according to driving situation
WO2001085509A1 (en) * 2000-05-11 2001-11-15 Nicola Betti Emergency brake automatic controlled device for motor vehicles or the like
US6386338B1 (en) 2000-12-01 2002-05-14 Dura Global Technologies, Inc. Electric parking brake manual override
US20040043868A1 (en) * 2000-12-08 2004-03-04 Heinz Ewinger Method for operating a motor-driven vehicle
US6951528B2 (en) * 2000-12-08 2005-10-04 Conti Temic Microelectronic Gmbh Method for operating a motor-driven vehicle
US20050173977A1 (en) * 2002-05-16 2005-08-11 Joerg Fischer Vehicle brake system comprising a service brake system and a parking brake system
US7017701B2 (en) 2002-11-20 2006-03-28 Dura Global Technologies, Inc. Inclination-measuring device
US20040094913A1 (en) * 2002-11-20 2004-05-20 Flynn Charles L. Inclination-measuring device
US20060224277A1 (en) * 2003-02-15 2006-10-05 Daimlerchrysler Ag Method and device for identifying the initiation of the starting process carried out by a driver of a vehicle
US7480545B2 (en) 2003-02-15 2009-01-20 Daimler Ag Method and device for detecting the initiation of the driving off process by a driver of a vehicle
WO2005063535A1 (de) * 2003-12-23 2005-07-14 Lucas Automotive Gmbh Feststellbremse und verfahren zur steuerung derselben
US20060261764A1 (en) * 2003-12-23 2006-11-23 Lucas Automotive Gmbh Parking brake and method for controlling the same
US7227324B2 (en) 2003-12-23 2007-06-05 Lucas Automotive Gmbh Parking brake and method for controlling the same
CN100408396C (zh) * 2003-12-23 2008-08-06 卢卡斯汽车股份有限公司 驻车制动器及其控制方法
US20050246081A1 (en) * 2004-04-10 2005-11-03 Christophe Bonnet Method and system to prevent unintended rolling of a vehicle
US7630814B2 (en) * 2004-08-17 2009-12-08 Siemens Aktiengesellschaft Control system for the parking brake of a brake system in a motor vehicle
US20080147286A1 (en) * 2004-08-17 2008-06-19 Siemens Aktiengesellschaft Control System for the Parking Brake of a Brake System in a Motor Vehicle
US20080284358A1 (en) * 2005-11-30 2008-11-20 Mihai Ralea Controller for Electromechanical Braking System with Power Demand Control and Method
WO2007120267A3 (en) * 2005-11-30 2008-03-13 Goodrich Corp Controller for electromechanical braking system with power demand limitation and method
WO2007120267A2 (en) * 2005-11-30 2007-10-25 Goodrich Corporation Controller for electromechanical braking system with power demand limitation and method
US7992691B2 (en) 2007-10-24 2011-08-09 Continental Teves Ag & Co. Ohg Parking brake and method for operating same
CN101835665B (zh) * 2007-10-24 2013-01-09 大陆-特韦斯贸易合伙股份公司及两合公司 驻车制动器及其运行方法
US8397879B2 (en) 2007-10-24 2013-03-19 Continental Teves Ag & Co. Ohg Parking brake and method for operating same
KR101533131B1 (ko) * 2007-10-24 2015-07-01 콘티넨탈 테베스 아게 운트 코. 오하게 주차 브레이크 및 이 주차 브레이크의 작동 방법
US20130073163A1 (en) * 2010-08-13 2013-03-21 Wuhu Bethel Automative Safety Systems Co., Ltd. Electronic parking brake system, assistant starting method thereof for motor vehicle
US8948965B2 (en) * 2010-08-13 2015-02-03 Wuhu Bethel Automotive Safety Systems Co. Ltd. Electronic parking brake system, assistant starting method thereof for motor vehicle
US20120138394A1 (en) * 2010-12-02 2012-06-07 Kia Motors Corporation Control method for parking release apparatus of shift-by-wire shifting device
US8839916B2 (en) * 2010-12-02 2014-09-23 Hyundai Motor Company Control method for parking release apparatus of shift-by-wire shifting device

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EP0478642B1 (de) 1993-12-08
ES2047936T3 (es) 1994-03-01
EP0478642A1 (de) 1992-04-08
DE59003809D1 (de) 1994-01-20
JPH04506197A (ja) 1992-10-29
JP2931402B2 (ja) 1999-08-09
WO1990015734A1 (de) 1990-12-27

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